The science and pedagogy behind this activity, including a discussion of concepts such as density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, and the characteristics of the states of water, water vapor, and ice. Also describes strategies for observing, asking questions, and then choosing a question to investigate further.

Learn more about the new mission to Mars! The Mars Phoenix Lander touched down on the Red Planet on Sunday, May 25, 2008, and began collecting data. Phoenix is designed to study the history of water and search for complex organic molecules in the Martian arctic's ice-rich soil. Join Exploratorium Senior Scientist Paul Doherty as he walks us through the mission and shows us the first pictures that the Phoenix Lander sends back!

Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week's secret ingredient-water!

In this special "holiday" edition of Iron Science Teacher, Paul Doherty joins our competition in the webcast studio live from Antarctica. Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week's "secret" ingredient: ice!

Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. This special edition will pit east coast teachers from Columbia University against teachers from the Exploratorium's Teacher's Institute. In this zany competition teachers will have ten minutes to create a science activity from a "secret" ingredient: milk cartons!

Webcasts made possible through
the generosity of the Gordon and Betty Moore Foundation, The Jim Clark
Endowment for Internet Education, the McBean Family Foundation,.and the Corporation for Educational Networks Initiatives in California (CENIC).